No one has gifted Jungkook land on the moon. While it's a fun idea, there is no legal framework in place for the ownership of celestial bodies, including the moon.
The Outer Space Treaty of 1967, signed by most countries, states that outer space, including the moon, is the province of all humankind and cannot be claimed by any nation.
This means that no individual, including Jungkook, can own land on the moon.
However, there are companies that offer "lunar land deeds" as novelty gifts or souvenirs. These deeds are not legally recognized and have no actual ownership value.